At present, there are many access control controller products in the Chinese market, and the functions are almost the same, but the quality is uneven. Therefore, the selection of products is especially important for the engineering company. So how do you choose a high quality access controller? The convenience of the stability of the access control system The practicality of the function is an important factor and core criterion for the evaluation of the access controller.
Access controller classification
The access controller can be divided into RS485 networked access controller, TCP/IP network access controller and non-network access control according to the communication method.
1.485 network access control
It is the type of access control that can communicate with the computer, directly using software for management, including card and event control. Therefore, it is convenient to manage, centralized, and can view records and analyze and process records for other purposes. The characteristic is that the price is relatively high, the installation and maintenance are difficult to increase, but the training is simple, and value-added services such as attendance can be performed. Suitable for many people, large mobility, and many projects.
2.TCP/IP network access control
Also called Ethernet network access control, it is also a network access control system, but the computer and controller are networked through the network cable. In addition to all the advantages of 485 access control networking, it also has faster speed, simpler installation, more networking, and can be networked across regions or cities. However, there are high equipment prices and need to have computer network knowledge.
3. Not connected to the Internet
That is, the stand-alone control type access control is a machine that manages a door, can't be controlled by computer software, can't see the record, and directly controls through the controller. It is characterized by low price, simple installation and maintenance, and can not view records. It is not suitable for places where the number of people is more than 50 or people are constantly moving (referring to frequent entry and resignation), and it is not suitable for projects with more than 50 people.
Access controller purchase
Recommendation 1: Choose an access controller with anti-crash and self-test circuit design
If the access controller crashes, it will make the user unable to open the door or close the door, which will bring great inconvenience to the customer. At the same time, it will increase the maintenance and maintenance cost of the engineer. The access controller must be installed with a reset chip or optional. CPU with reset function, generally 51 series CPU does not have reset function, you need to install reset chip. At the same time, it must have a self-test function. If the circuit crashes due to interference or abnormal conditions, the system can self-test and self-start in an instant.
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